In situ observation of tricalcium aluminate dissolution in water

Conference paper (2021)

Authors

Shaoxiong Ye Southeast University, China
Pan Feng Southeast University, China - State Key laboratory of High Performance Civil Engineering Materials, China
Yao Liu Southeast University, China
Jiaping Liu Southeast University, China - State Key laboratory of High Performance Civil Engineering Materials, China
Copyright: © 2021 the authors
DHM C3A Rapid dissolution
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Published Date

29-04-2021

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Abstract

The nanoscale dissolution flux of tricalcium aluminate (C3A) in flowing water is characterized in situ by Digital Holographic Microscopy (DHM). The pure dissolution of C3A in flowing water with a flow rate of 34 ml·min-1 before the precipitation of hydrated phases only lasted about one quarter of a second, and the pure dissolution rate mostly falls in the range of 500 ~ 1500 μmol·m-2·s-1. Subsequently, foil shape hydration product formed and rapidly covered the surface of C3A, leading to the dramatic decrease of the overall dissolution rate to 55 ± 10 μmol·m-2·s-1.